[LU-19230] User linux kernel fs_context API

• Type: Improvement
• Resolution: Unresolved
• Priority: Medium
• Affects Version/s: Lustre 2.17.0
• Environment: All supported platforms except for SLES12 SP4 which is a 4.12 kernel.

Epic/Theme

upstream

• Severity: 3
• Assignee: WC Triage
• Reporter: James A Simmons

Description

To use the new inode shrinker we need to move to the new fs_context API. This new API also has some really powerful new features. One being that we can set file system parameters independent of performing a mount. This can replace the current approach Lustre uses to tune a file system with tunefs with a universal standard approach. We can also remount lustre with new mount settings.

Issue Links

• is related to: LU-19231 Update mount utility to use fsconfig API backend of libmount
• is related to: LU-13833 hook llite to inode cache shrinker
• is related to: LU-12511 Prepare lustre for adoption into the linux kernel